Home / 3,578.71-4,932.90-2,821.25

Finding the Fourth Proportional to 3,578.71, 4,932.90 and 2,821.25

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Solution

The fourth proportional to 3,578.71, 4,932.90 and 2,821.25 is: 3,888.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.71 : 4,932.90 = 2,821.25 : x
  2. Step 2: Convert to fraction form
    3,578.71/4,932.90 = 2,821.25/x
  3. Step 3: Cross multiply
    3,578.71x = 4,932.90 × 2,821.25
  4. Step 4: Simplify right side
    3,578.71x = 13,916,944.13
  5. Step 5: Solve for x
    x = 13,916,944.13/3,578.71
  6. Step 6: Final answer
    x = 3,888.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.